it's what makes a subaru, a subaru. energy is being produced to power our lives. while energy development comes with some risk, north america's natural gas producers are committed to safely and responsibly providing generations of cleaner-burning energy for our country, drilling thousands of feet below fresh water sources within self-contained well systems. and, using state-of-the-art monitoring technologies, rigorous practices help ensure our operations are safe and clean for our communities and the environment. we're america's natural gas. dad vo: ok, time for bed, kiddo. lights out. ♪ (sirens) (train horn) ♪ vo: wherever our trains go, the economy comes to life. norfolk southern. one line, infinite possibilities. >>> many of the president's allies are openly acknowledging that his first debate appearance fell flat last night. and the independent senator from vermont, senator bernie sanders is joining us now. senator, thanks very much for coming in. >> my pleasure. >> you are a very blunt guy and always tell us what's on your mind. how do you think the presi